Question about Sony KV-20V50 20" TV
MY SONY KV20V50 ALTHOUGH WORKING GREAT, HAS START TO SCHRINK IN THE VERTICAL. I LOOKED ALL OVER TRYING TO SEE IF THERE IS ANYTYPE OF VERTICAL ADJUSMENT POT, COULD NOT FIND. NEED HELP TO READJUST. IT HAS REDUCED ITSELF BY 1/2 INCH AT THE TOP. THANKS
SOURCE: Sony Trinitron kv-27HFR blurry
the picture tube is gone.
i repaired 150 sony xbr and kv series with that problem.sony has a single gun not three and has a great pix,but burn out faster.
there is a main screen control that you can adjust ,but the tube is gone.
on the back of the crt there is 3 gun drives r g b .
turn the color all the way down so it is black and white.
if there is a green ore purple tint,one gun is out of balance.
ajdusting the r g b controls so that black and white is normal is what you want to do.
the crt board has the screen bias voltage 800volts on it so be very careful and use an insulated screwdriver to adjust the drive controls.
Posted on May 13, 2009
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